Questions tagged [juniper]

A tag for questions involving Juniper Networks hardware or software.

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2
votes
2answers
615 views

How to test if an sfp is working on juniper qfx5100

How to test if an sfp is working on juniper qfx5100 My manager asked me to test if a 3rd party sfp is working on juniper !! what tests can i run on it to compare different company test equipment ? ...
2
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1answer
2k views

What's the purpose of JUNOS' sfid process?

In the last few days, one Juniper EX-2200-48P has started complaining via syslog: Jun 21 12:50:03 ex2200-b sfid[717]: TASK_OS_MEMHIGH: Using 52118 KB of memory, 103 percent of available After a ...
4
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1answer
165 views

understanding naming of Junos routing tables

Am I correct that master RI in Junos can have one and only one inet.0 table and each user-defined RI can have only one <RI_name>.inet.0 table? Also, master RI can have a single inet6.0 table and ...
4
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1answer
88 views

How does Junos distinguish that route is learned in Layer 3 or Layer 2 VPN environment?

As I understand from Understanding Junos OS Routing Tables document, then bgp.l3vpn.0/bgp.l3vpn-inet6.0 or bgp.l2vpn.0 tables contain routes learned from other PE routers in Layer 3 or Layer 2 VPN ...
3
votes
1answer
11k views

How to show the MAC table for interfaces on a Junos Virtual Chassis member?

I'm using this command to show the MAC address table on a Juniper EX4500 series Virtual Chassis with 2 members: show ethernet-switching table The results show only interfaces for the Virtual ...
3
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2answers
574 views

Junos complex regular expressions question

I saw this explanation in the JNCIS study guide book ch1 (community regex examples) and i'm a bit confused: ^65000:.{2,3}$ - AS number is 65000, community value is any 2 or 3 digit number ex. 65000:...
3
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1answer
718 views

Juniper SRX 240 Routing Configuration

I am working with a Juniper SRX 240 as an aggregation routing device, it connects a Desktop (Workstation) environment over an access switch port to several (4) server environments behind Cisco Layer 2 ...
2
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1answer
197 views

How do you schedule traffic that exits via a bridge-domain?

I've got a single MX router connected to two physical interfaces on an SRX chassis cluster - each interface being a member of a reth interface. In order to make this work, on the MX side I have the ...
1
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1answer
193 views

CanI prevent a secondary DHCP server on the LAN from taking over from SRX Juniper's DHCP?

I have admin access to a SRX550 Juniper, but I cannot get help from Juniper or joint their boards because the Juniper belongs to Century Link, not us. I have the following: # show system services ...
2
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1answer
2k views

SonicWall is dropping encrypted packets with error “sonicwall ipsec vpn decryption failed selector check error”

I have implemented a Site-to-Site IPsec tunnel between a Juniper SSG firewall and a SonicWall. However, any traffic that I send over the tunnel gets dropped on the SonicWall with an error saying ...
3
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1answer
638 views

How can I monitor SSH or HTTPS activity on Juniper SRX 240 firewall?

In Junos is there any way I can monitor SSH or HTTPS login activity though logs? I would like to receive alerts if there are any changes made in the current config.
7
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2answers
1k views

Can Junos show a matching config statement in context, like IOS `| section`?

Hard to describe what I'm asking. For example, here's a section of my config, with the full hierarchy: interfaces { ge-0/1/9 { vlan-tagging; unit 100 { description "my ...
4
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1answer
214 views

Can I get what filters are applied to an interface via SNMP?

I have some firewall filters on juniper devices- ex3300s make up the majority of them. I've been looking for an oid that will let me associate an IFL with the filters that are on it, and I've yet to ...
0
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1answer
272 views

Juniper SRX 240H latency going on with HA Cluster. Are there any steps to troubleshoot the issue?

Currently we are having a latency issue between a Juniper HA cluster and a Cisco switch c3750. We have LACP configured between them. reth3 { vlan-tagging; redundant-ether-options { redundancy-group 1;...
2
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1answer
105 views

Juniper JunOS routing issue in v15.1.49

I have a Cisco Nexus that has a few vlans on it - total network size is 172.26.64.0/20 split into /24 vlans - each using the third octet as the vlan ID. It's IP is 172.26.x.254 on each vlan as the ...
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0answers
711 views

2x Juniper SRX300 RETH interface on multiple interfaces [closed]

We have two SRX300 boxes in a chassis cluster. I have configured the RETH0 interface for WAN communication and assigned 1 port on the first unit and 1 port at the second unit. I have setup reth1 ...
4
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1answer
749 views

EVPN/VXLAN RD & RT

I was reading through this example on Juniper's EVPN/VXLAN documentation and I can't understand why I need two different Route-Distinguishers and Route-Targets. The RD & RT in the VRF instance is ...
1
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1answer
533 views

Traffic flow for internal traffic in Juniper SRX 650

I would like to know whether the Juniper SRX by default allows all the source and destination ports if all the devices are from the internal networking range. For eg, Src-10.10.x.x SrcPrt-any Des-10....
2
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1answer
76 views

Is it possible to use the console on a Juniper EX for outbound connections?

I want to connect two EX switches by console cable and want to use this connection to open a console session from one EX to the other. I found no "offical" way to do this but maybe someone else has ...
3
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1answer
960 views

Juniper SRX BGP based ECMP not working as expected

Overview I am trying to setup BGP based ECMP to two end servers that sit on separate subnets/VLANs and advertise out the same IP address to a SRX firewall. The end nodes are linux boxes running BIRD ...
5
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2answers
444 views

Juniper: WakeOnLan over 802.1x without using default VLAN

Case We have a working 802.1x configuration on all our access ports. I want to enable WakeOnLan, but have no idea, how to target computers with Magic Packet. Tests We tried to send Magic Packet ...
2
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1answer
186 views

Juniper SSG Split DNS not working over tunnel

I am trying to get the DNS Proxy feature working in an SSG5 (Side B). The other side of the VPN is an SSG140 (Side A). The DNS server is on Side A. foo.com should send DNS queries to 192.168.1.2 (...
4
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1answer
137 views

What are the uses of clocking and timing ports on Juniper routers

There are 4 ports each named "Ext Ref clock", "TOD", "1PPS", "10Mhz" on MX104. I understand what each stands for and have vague idea of each after googling but what are they used for in real world?
3
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1answer
998 views

EX3300: Voice VLAN stopped working after upgrade to 15.1R6.7

We have 50+ Juniper EX3300 switches with access points configured to work with dot1x and voice vlan. We also have a variety of Yealink T23G, T42G, T26G and T48G phones that worked perfectly in our ...
2
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1answer
2k views

Cisco Route Map equivalent in Juniper JUNOS

Here is a scenario and working route-map example for Policy base routing. I'm new Junos i'm struggling with Firewall filters and Policy-statements in Junos. Can you help me to convert this simple ...
1
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1answer
1k views

Why is blocked edge port still forwarding in RSTP on Juniper EX Switch?

I have one EX Switch connected to my laptop on port ge-0/0/9 set protocols rstp interface ge-0/0/9 edge set protocols rstp bpdu-block-on-edge commit root> show spanning-tree interfaces it still ...
2
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1answer
1k views

Does Juniper Loopback address need security zone configurations to be able to accept pings?

Do you need configure lo0 unit 0 with set security zones security-zone trust interface lo0.0 set security zones security-zone host-inbound-interfaces system-services ping Do you have to do this for ...
1
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1answer
323 views

My two Juniper J2320 Routers can't ping each other

FINALLY GOT IT TO WORK I have two J2320s connected by an Ethernet cable. The cable is connected to both in their ge-0/0/1 unit 0 interfaces. One is 192.168.2.5/24 and the other is 192.168.2.13/24 ...
5
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1answer
443 views

Juniper EX4600: multicast not working in vlan default. [closed]

I have a Juniper EX4600 switch which I'm using for host connectivity (obviously). Now I need to set up a VRRP/CARP between two hosts that are in the same vlan, and it's the default one. Surprisingly, ...
2
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1answer
639 views

Juniper SRX 1400: Policy to redirect users to custom URL

What I need I have SRX 1400 @ JUNOS 12.3X48-D40.5 Imagine having, among others, following zones: UNTRUSTED-CLIENTS, WORLD and INTRANET. I want to block all traffic from UNTRUSTED-CLIENTS to WORLD, ...
1
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1answer
181 views

Block all inbound traffic except for a defined IP

Thanks in advance to anyone who will take time to provide a possible solution. This is my actual situation: ___________________ ________________ INTERNET --------...
4
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1answer
4k views

show mac address on aggregated interface - Junos

I am trying to audit which interfaces are plugged to which switchport on our EX3300 switches. The problem is that when using aggregated interface I see only one mac address. wadmin@SIN11-VCsw-48-11&...
0
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2answers
679 views

Device need Telnet to configure, but no IP is assigned

I have a UPS device connected to a Juniper EX switch. According to the UPS device documentation the device used DHCP and BOOTP to obtain a IP. This is part of a management network which doesn't have a ...
1
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1answer
463 views

How do i clear icmp statistics (JUNOS)

I run a rapid ping and then run show system statistics icmp I want to run another ping test but how do I clear out the old stats? clear interfaces statistics all does not clear out the icmp stats
0
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1answer
2k views

How to configure L2TP Client on Juniper SRX?

I have an Juniper SRX 100, running JunOS 12.1X46-D66. I would like to use it to route all Internet traffic through an L2TP tunnel to an ISP called Andrews and Arnold, who offer this as a service. ...
1
vote
1answer
156 views

What's the proper way to route a subnet through an OSPF area?

To make the example as simple as possible. We have an OSPF area setup so that if one link fails or gets congested, traffic will reroute through the other. Is there a way to have traffic pass from ...
0
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2answers
2k views

Traffic utilization on Cisco and Juniper devices

I'd like to check current traffic utilization (how much Mb/s is used per interface) on port on cisco switch and Juniper SRX device - any ideas where I can look up for this informations? Thank you for ...
1
vote
2answers
6k views

Update-source loopback and next-hop-self

I've a question related to BGP configuration. If I'm using the update-source loopback or next-hop-self commands, will they modify the source IP address in the packet? Assume R1 has an eBGP session ...
0
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1answer
579 views

Linux LACP (802.3ad) working for ingress traffic only?

We've setup LACP (802.3ad) on our Juniper switch and a Linux host, connected to the switch with 3x 1Gbps links. We are able to download from multiple sources at a rate of 3 Gbps, but when uploading ...
1
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0answers
655 views

Logical-Tunnel Interface Juniper MX 480 doesn't “work”

I have configured a logical tunnel between my master-routing-instance and a additional routing-instance. I tested the same config (except IP addresses) on my lab-system and on one of our other core-...
1
vote
3answers
3k views

Juniper EX how to clear route forwarding table?

After layer 3 routing a large IPv6 assignment on an EX Juniper switch, the route forwarding table filled up and some entries corrupted or became otherwise invalid. We want to clear the whole table. ...
3
votes
3answers
8k views

How do I forward multicast packets over IPSec VPN Tunnel on Juniper SRX?

I have an IPSec site-to-site VPN setup between two SRX300 devices. I am trying to get multicast to travel across. I am looking for the simplest configuration possible to get this setup. I have found ...
3
votes
1answer
1k views

Juniper ARP table max limit

I'm running EX3300-48T - Junos-12.3R11.2. After binding multiple /24s on multiple vlans on the same switch, Started to notice that the newly and the old assigned IPs are not pinging on multiple ...
2
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1answer
986 views

Need help with PPPoE Subscriber Management on a MX80

I've been working with Subscriber Management using DHCP and a FreeRadius server and have been quite successful. Of course, once my company heard that it is possible for customers to bring their public ...
2
votes
1answer
2k views

How to connect two Juniper gns3 with fastethernet?

I need to connect two Juniper routers with fastethernet interface. When I am connected by em0, I can check the connection between them by ping. But when I tried to set fe-0/0/0 in two routers, I can't ...
1
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1answer
310 views

Which one of juniper routers image gives me this option (GNS3)?

I need to create the same network with cisco and juniper routers. I find tutorial to cisco. When i clicked on configuration in cisco router i have a lot of options for example WICs, its emulated by ...
1
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1answer
69 views

How to change chassis description?

I would like to change chassis description. Command show chassis hardware display the list of all hardware (also chassis) with interesting parameters (also description). It's possible to change eg. ...
1
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1answer
481 views

How do I update a 2nd hand bought Juniper SRX240

I bought a used SRX240 on ebay to learn a bit about it (and use it as a home router). Upon starting it seems it has a very old firmware, so I wanted to update it. So I created an account on juniper....
3
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3answers
677 views

Juniper Dynamic Subscriber Management Traffic Policing

I've managed to get QinQ subscriber management working. Now I want to shape / police both VLAN connections. As a test I have configured this: DYNINTF-STACKED-KANTOOR-TEST { interfaces { "$...
1
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1answer
108 views

In a datacenter, can i use the combination of cisco and juniper routers and switches?

In a datacenter, can I be able to use switches of cisco in some parts and juniper products too ? I mean in the active side ??can I be able to link both to do a single functionality ?

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